I'll step back from our discussion to address your new question.
What would I do?
IF, I was a guide. It would be for a few reasons.
1. I know how to hunt,scout and plan for my area. As well as be able to protect the hunter from the elements and other hazards of hunting.
2. I know how to work with a wide variety of people because if my services are as a guide, I realize that I may encounter people from all walks of life. Therefore I would also be a great (or decent) judge of character.
3. I would also have a screening process, as Im sure you already do to weed out people with the wrong attitude. Because from my knowledge of being able to work with people I would realize that not every Tom, Dick or Harry with enough money to use my services would be mentally able to handle a hunt that could very well kill us both.
With that being said, I would of talked with this person as soon as he scheduled the hunt. By doing that, I would of realized (by your admittance) that he was not mentally fit. BUT, if he passed the pre-screen before the hunt. I would of addressed the disrespect as soon as he showed it. First a verbal warning and then if he did it again, the hunt would be called off. I would also include this in the fine print of the signed agreement.
Could be way off base, as I'm not a guide like yourself. That's my personal response without any of our differences involved. Just from the information I already have.